IP Library › Granted Patent US 5,115,437
Granted Patent Utility
US 5,115,437 · App. 07/487,481

Internal test circuitry for integrated circuits using token passing to select testing ports

Inventors: Kenneth Brakeley Welles, II, Richard I. Hartley, Michael James Hartman
Patented Case View Patent ↗
Granted: May 19, 1992 Filed: Mar 2, 1990
Inventors
Kenneth Brakeley Welles, II
Richard I. Hartley
Michael James Hartman
Assignee (at issue)
General Electric Company

This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.

Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 5,115,437
App. No.
07/487,481
Filed
1990-03-02
Granted
1992-05-19
Kind
A